[linux-lvm] (no subject)

From: "Howard Clifford" <howardclifford cablespeed com>

To: <linux-lvm sistina com>

Subject: [linux-lvm] (no subject)

Date: Sun Jun 29 11:10:02 2003

I built a 7 disk vg and put 1 lv on it. I do not want to mount a file
system.
I just want to write directly to the disk device, /dev/vg1/vol1.
My write performance has an odd behavior.
If after booting I write to the volume I get roughly 175MB/sec.
If after booting I do a mke2fs on the volume, mount it, umount it, then
write to the volume I get roughly 230 MB/sec.
Any ideas? How can I get top speed without first mounting then
umounting the volume?
By the way, I tried binding a raw device to the lv and got very bad
performance; around 80 MB/sec. Would that be expected?
(I'm using redhat 9.0 -> lvm-1.0.3-12)
Thanks...